CN207838670U - A kind of Industrial Boiler low temperature SCR denitration system - Google Patents
A kind of Industrial Boiler low temperature SCR denitration system Download PDFInfo
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- CN207838670U CN207838670U CN201721721367.8U CN201721721367U CN207838670U CN 207838670 U CN207838670 U CN 207838670U CN 201721721367 U CN201721721367 U CN 201721721367U CN 207838670 U CN207838670 U CN 207838670U
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- smoke box
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- low temperature
- mixing chamber
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Abstract
The utility model discloses a kind of Industrial Boiler low temperature SCR denitration systems, including gas complementary combustion device, even smoke box, pesticide spraying system and SCR reactors, gas complementary combustion device includes the first mixing chamber and the second mixing chamber, and the first mixing chamber is connected with combustion gas feed pipe and air feed pipe；It is provided with gas inlet at the top of second mixing chamber, the bottom of second mixing chamber is connect with even smoke box, the mixed flue gas of exhaust gas after flue gas and fuel gas buring after heating is delivered to even smoke box, the top of even smoke box is provided with urea jet port, and urea jet port is connected with the pesticide spraying system；SCR reactors are provided with below even smoke box.The utility model makes the temperature for the flue gas for reaching even smoke box outlet reach within the scope of 320 420 DEG C by gas complementary combustion device, is reacted under the catalytic condition of cellular vanadium titanium catalyst in SCR reactors, NOx concentration in SCR reactor outlet flue gases<=50mg/Nm3 reaches ultra-clean discharge standard.
Description
Technical field
The utility model is related to environmental technology fields, and in particular to a kind of Industrial Boiler low temperature SCR denitration system.
Background technology
Current existing SCR denitration system, entrance flue gas temperature generally requires within the scope of 320-420 DEG C, due to mistake
Go environmental requirement low, old Industrial Boiler is not equipped with flue gas denitrification system generally.It is controlled recently as national departments concerned air
The dynamics of reason reinforces and the raising of environmental requirement, and existing old Industrial Boiler is faced with denitrating flue gas transformation, but does not have
Meet the temperature range of 320-420 DEG C of flue gas, more there are some newly-built Industrial Boilers, influenced by structure, also do not have the condition.
It is wanted in conclusion cannot be satisfied 320-420 DEG C for temperature after old Industrial Boiler fume treatment in the prior art
The problem of asking, cannot achieve ultra-clean discharge, still lacks effective solution scheme.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of Industrial Boiler low temperature SCR denitration system
System makes the temperature for the flue gas for reaching even smoke box outlet reach within the scope of 320-420 DEG C, is reacted in SCR by gas complementary combustion device
It is reacted under the catalytic condition of cellular vanadium titanium catalyst in device, NOx concentration in SCR reactor outlet flue gases<=50mg/Nm3, reaches
To ultra-clean discharge standard.
Technical solution used by the utility model is：
A kind of Industrial Boiler low temperature SCR denitration system, including gas complementary combustion device, even smoke box, pesticide spraying system and SCR reactions
Device, the gas complementary combustion device include the first mixing chamber and the second mixing chamber, first mixing chamber be connected with combustion gas feed pipe and
Air feed pipe；Gas inlet, the bottom of second mixing chamber and the even cigarette are provided at the top of second mixing chamber
Case connects, and the mixed flue gas of exhaust gas after the flue gas and fuel gas buring after heating is delivered to the even smoke box, the even cigarette
The top of case is provided with urea jet port, and the urea jet port is connected with the pesticide spraying system；It is set below the even smoke box
The SCR reactors are equipped with, the bottom of the SCR reactors is provided with exhanst gas outlet.
Further, the gas complementary combustion device further includes the nozzle that combustion gas is sprayed to first mixing chamber.
Further, the gas complementary combustion device further includes that the flue gas after heating is mixed and sprayed with the exhaust gas after fuel gas buring
The burner penetrated.
Further, the SCR reactors include reactor vessel, catalyst and soot blower, are arranged in inside reactor
There are three layers of catalyst, the inner top of reactor vessel is provided with soot blower, flue gas rectification layer is set in reactor vessel upper end.
Further, it is connected with combustion fan on the air feed pipe.
Further, the pesticide spraying system includes urea box, dosing pump and injection pipe, between the urea box and dosing pump
It is connected with inlet tube, one end of the injection pipe is connect with dosing pump, and the other end is connect with the urea jet port on even smoke box.
Further, the urea jet port is using spray umbrella-shaped structure.
Further, further include denitration control system, the denitration control system includes master controller, SCR flue gas monitorings
Module, spraying control module, sensor assembly and display module, the SCR flue gas monitorings module, spraying control module, sensing
It device module and is connect respectively with master controller with display module, the spraying control module is connect with pesticide spraying system.
Further, the sensor assembly includes pressure sensor, temperature sensor and flue gas flow sensor, described
Pressure sensor, temperature sensor and flue gas flow sensor are connect by AD conversion module with master controller respectively.
Further, the exhanst gas outlet of the SCR reactors is provided with NOX sensor, the NOX sensor and SCR cigarettes
Gas monitoring modular connects
Compared with prior art, the utility model has the beneficial effects that：
(1) the utility model makes the temperature for the flue gas for reaching even smoke box outlet reach 320-420 by gas complementary combustion device
It within the scope of DEG C, is reacted under the catalytic condition of cellular vanadium titanium catalyst in SCR reactors, NOx in SCR reactor outlet flue gases
Concentration<=50mg/Nm3 reaches ultra-clean discharge standard；
(2) the utility model can maintain Boiler Operation constant, effectively improve underload boiler thermal efficiency；
(3) the utility model controls entire denitrating system by microprocessor, and by sensor assembly to each
A data are detected, and are monitored to the exhanst gas outlet NOx concentration of SCR reactors according to SCR flue gas monitorings module, are passed through
Display device is inquired, while pesticide spraying system can accelerate denitration reaction.
Description of the drawings
Fig. 1 is Industrial Boiler low temperature SCR denitration system structure diagram disclosed in the utility model embodiment；
Wherein, 1, gas complementary combustion device, 2, combustion gas feed pipe, 3, air feed pipe, 4, combustion fan, 5, even smoke box, 6, SCR
Reactor, 7, gas inlet, 8, exhanst gas outlet, 9, urea jet port, 10, injection pipe, 11, dosing pump.
Specific implementation mode
The utility model is further illustrated below in conjunction with the accompanying drawings.
In a kind of typical embodiment of the application, as shown in Figure 1, providing a kind of Industrial Boiler low temperature SCR denitration
System, the denitrating system include gas complementary combustion device 1, even smoke box 5, pesticide spraying system and SCR reactors 6, and the gas complementary combustion device 1 wraps
The first mixing chamber and the second mixing chamber are included, first mixing chamber is connected with combustion gas feed pipe 2 and air feed pipe 3, the sky
Combustion fan 4 is connected on gas feed pipe 3；Gas inlet 7, second mixing chamber are provided at the top of second mixing chamber
Bottom connect with the even smoke box 5, the mixed flue gas of exhaust gas after the flue gas and fuel gas buring after heating is delivered to institute
Even smoke box 5 is stated, the top of the even smoke box is provided with urea jet port 9, the urea jet port 9 and the pesticide spraying system phase
Even；The lower section of the even smoke box 5 is provided with the SCR reactors 6, and the bottom of the SCR reactors is provided with exhanst gas outlet 8.
In the present embodiment, above-mentioned gas complementary combustion device further includes the nozzle that combustion gas is sprayed to first mixing chamber, with
And the burner that the flue gas after heating is mixed and sprayed with the exhaust gas after fuel gas buring.
In the present embodiment, above-mentioned SCR reactors 6 include reactor vessel, catalyst and soot blower, in reactor
Portion is provided with three layers of catalyst, and the inner top of reactor vessel is provided with soot blower, and flue gas is arranged in reactor vessel upper end
Rectification layer；The catalyst is cellular vanadium titanium catalyst.
In the present embodiment, above-mentioned pesticide spraying system includes urea box, dosing pump 11 and injection pipe 10, the urea box and
Inlet tube is connected between dosing pump, one end of the injection pipe 10 is connect with dosing pump 11, the other end and the urine on even smoke box
Plain jet port 9 connects；The urea jet port 9 is using spray umbrella-shaped structure.
On the basis of the above embodiments, the system of Industrial Boiler low temperature SCR denitration described in one embodiment of the invention is also
Including denitration control system, the denitration control system includes master controller, SCR flue gas monitorings module, spraying control module, passes
Sensor module and display module, the SCR flue gas monitorings module, spraying control module, sensor assembly and with display module point
It is not connect with master controller, the spraying control module is connect with pesticide spraying system.
Wherein, the sensor assembly includes pressure sensor, temperature sensor and flue gas flow sensor, the pressure
Sensor, temperature sensor and flue gas flow sensor are connect by AD conversion module with master controller respectively.
In the present embodiment, the exhanst gas outlet of the SCR reactors is provided with NOX sensor, the NOX sensor with
SCR flue gas monitoring modules connect.
As shown in Figure 1, the utility model proposes the Industrial Boiler low temperature SCR denitration system in use, first will be low
After warm flue gas carries out reheating by gas complementary combustion device 1, even smoke box is entered together with the exhaust gas after fuel gas buring, passes through combustion gas
Afterburner so that for the flue gas of 5 casees outlets of even cigarette within the scope of 320-420 DEG C, the urea jet port 9 of pesticide spraying system is located at even smoke box
Top, urea liquid is sprayed into even smoke box 5 by pesticide spraying system, it is effective that urea liquid enters even smoke box 5 together with flue gas
Ground mixing is evenly distributed with, and is then entered SCR reactors 6 together, is reacted under the catalytic condition of cellular vanadium titanium catalyst, SCR reactions
NOx concentration in the flue gas that the exhanst gas outlet 8 of device exports<=50mg/Nm3 reaches ultra-clean discharge standard.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (10)
1. a kind of Industrial Boiler low temperature SCR denitration system, characterized in that including gas complementary combustion device, even smoke box, pesticide spraying system and
SCR reactors, the gas complementary combustion device include the first mixing chamber and the second mixing chamber, first mixing chamber be connected with combustion gas into
Expects pipe and air feed pipe；Gas inlet, the bottom of second mixing chamber and institute are provided at the top of second mixing chamber
Even smoke box connection is stated, the mixed flue gas of exhaust gas after the flue gas and fuel gas buring after heating is delivered to the even smoke box, institute
The top for stating even smoke box is provided with urea jet port, and the urea jet port is connected with the pesticide spraying system；The even smoke box
Lower section is provided with the SCR reactors, and the bottom of the SCR reactors is provided with exhanst gas outlet.
2. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that the gas complementary combustion device also wraps
Include the nozzle that combustion gas is sprayed to first mixing chamber.
3. Industrial Boiler low temperature SCR denitration system according to claim 2, characterized in that the gas complementary combustion device also wraps
Include the burner that the flue gas after heating is mixed and sprayed with the exhaust gas after fuel gas buring.
4. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that the SCR reactors include anti-
Device container, catalyst and soot blower are answered, inside reactor is provided with three layers of catalyst, is arranged in the inner top of reactor vessel
There is soot blower, flue gas rectification layer is set in reactor vessel upper end.
5. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that connect on the air feed pipe
It is connected to combustion fan.
6. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that the pesticide spraying system includes urine
Plain case, dosing pump and injection pipe are connected with inlet tube, one end of the injection pipe and dosing between the urea box and dosing pump
Pump connection, the other end are connect with the urea jet port on even smoke box.
7. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that the urea jet port uses
Spray umbrella-shaped structure.
8. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that further include denitration control system,
The denitration control system includes master controller, SCR flue gas monitorings module, spraying control module, sensor assembly and display mould
Block, the SCR flue gas monitorings module, spraying control module, sensor assembly and display module are connect with master controller respectively, institute
Spraying control module is stated to connect with pesticide spraying system.
9. Industrial Boiler low temperature SCR denitration system according to claim 8, characterized in that the sensor assembly includes
Pressure sensor, temperature sensor and flue gas flow sensor, the pressure sensor, temperature sensor and flue gas flow sensing
Device is connect by AD conversion module with master controller respectively.
10. Industrial Boiler low temperature SCR denitration system according to claim 1, characterized in that the cigarette of the SCR reactors
Gas outlet is provided with NOX sensor, and the NOX sensor is connect with SCR flue gas monitoring modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721721367.8U CN207838670U (en) | 2017-12-12 | 2017-12-12 | A kind of Industrial Boiler low temperature SCR denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721721367.8U CN207838670U (en) | 2017-12-12 | 2017-12-12 | A kind of Industrial Boiler low temperature SCR denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207838670U true CN207838670U (en) | 2018-09-11 |
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ID=63424158
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721721367.8U Expired - Fee Related CN207838670U (en) | 2017-12-12 | 2017-12-12 | A kind of Industrial Boiler low temperature SCR denitration system |
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|---|---|
| CN (1) | CN207838670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316962A (en) * | 2018-11-20 | 2019-02-12 | 张扬 | Middle low temperature SCR denitration urea pyrolysis and catalyst regeneration integral process |
-
2017
- 2017-12-12 CN CN201721721367.8U patent/CN207838670U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316962A (en) * | 2018-11-20 | 2019-02-12 | 张扬 | Middle low temperature SCR denitration urea pyrolysis and catalyst regeneration integral process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210816 Address after: 250000 Wudang Mountain Road (water saving irrigation Industrial Park), Laiwu high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Zhuopu new energy equipment Co.,Ltd. Address before: 271099 floors 1-2, axis 19-20, Yanjie building, No. 1, Daixia Huating, Taishan District, Tai'an City, Shandong Province Patentee before: SHANDONG YONGNING ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20211212 |